Vehicle Stability Control System (For Sedan) Brake Warning Light Does Not Come On

Brake. Yaris. Ncp93, 131
Brake Control Dynamic Control Systems. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

CHECK BRAKE WARNING LIGHT

INSPECT COMBINATION METER ASSEMBLY

VEHICLE STABILITY CONTROL SYSTEM (for Sedan) - Brake Warning Light does not Come ON


DESCRIPTION

The skid control ECU is connected to the combination meter via CAN communication.

WIRING DIAGRAM

Refer to Brake Warning Light Remains ON (YARIS_NCP93 RM000000YHG0BSX_02.html).

INSPECTION PROCEDURE

NOTICE:
  1. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  2. When replacing the brake actuator assembly, perform zero point calibration (YARIS_NCP93 RM000000XHR06QX.html).
1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if CAN communication system DTCs are output (YARIS_NCP93 RM000001D3E00OX.html).

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output
    		B



B
CHECK CAN COMMUNICATION SYSTEM (YARIS_NCP93 RM000001D3500JX.html)
A


2.CHECK BRAKE WARNING LIGHT

  1. Disconnect the skid control ECU connector.

  1. Turn the ignition switch to ON.

  1. Check that the brake warning light comes on.

    OK:
    The brake warning light comes on.


NG
Go to step 3
OK

REPLACE BRAKE ACTUATOR ASSEMBLY (YARIS_NCP93 RM000001BXP02FX.html)

3.INSPECT COMBINATION METER ASSEMBLY

  1. Turn the ignition switch off.

  1. Reconnect the skid control ECU connector.

  1. Connect the Techstream to the DLC3.

  1. Perform Active Test of the combination meter using the Techstream (YARIS_NCP93 RM000001DAT00FX.html).

    OK:
    The brake warning light turns ON or OFF in accordance with the Techstream.


NG
REPLACE COMBINATION METER ASSEMBLY (YARIS_NCP93 RM000000IN001JX.html)
OK

REPLACE BRAKE ACTUATOR ASSEMBLY (YARIS_NCP93 RM000001BXP02FX.html)